243873916 has 24 divisors (see below), whose sum is σ = 501392304. Its totient is φ = 102324480.

The previous prime is 243873907. The next prime is 243873943. The reversal of 243873916 is 619378342.

243873916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212605 + ... + 213748.

It is an arithmetic number, because the mean of its divisors is an integer number (20891346).

Almost surely, 2^243873916 is an apocalyptic number.

243873916 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

243873916 is an abundant number, since it is smaller than the sum of its proper divisors (257518388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243873916 is a wasteful number, since it uses less digits than its factorization.

243873916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426381 (or 426379 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 243873916 is about 15616.4629798172. The cubic root of 243873916 is about 624.7723253929.

The spelling of 243873916 in words is "two hundred forty-three million, eight hundred seventy-three thousand, nine hundred sixteen".